3r+9=2r-1

Simple and best practice solution for 3r+9=2r-1 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3r+9=2r-1 equation:


Simplifying
3r + 9 = 2r + -1

Reorder the terms:
9 + 3r = 2r + -1

Reorder the terms:
9 + 3r = -1 + 2r

Solving
9 + 3r = -1 + 2r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-2r' to each side of the equation.
9 + 3r + -2r = -1 + 2r + -2r

Combine like terms: 3r + -2r = 1r
9 + 1r = -1 + 2r + -2r

Combine like terms: 2r + -2r = 0
9 + 1r = -1 + 0
9 + 1r = -1

Add '-9' to each side of the equation.
9 + -9 + 1r = -1 + -9

Combine like terms: 9 + -9 = 0
0 + 1r = -1 + -9
1r = -1 + -9

Combine like terms: -1 + -9 = -10
1r = -10

Divide each side by '1'.
r = -10

Simplifying
r = -10

See similar equations:

| 2x+14=-10-2x | | 3x/2=33 | | 16m=6 | | 2(x+3)-5=2x+1 | | 3x+15=7x+1 | | 4(x+3)=7x+2 | | 11x-13=2x+8 | | 9(x-1)=9x-9 | | 2x+63=180 | | 14(-2)= | | 3x+4y+5z=60 | | 2x+2+3x+1=4x+8 | | 2(x+1)=7(x-2)+19 | | -x=2-3x+6 | | 52-3x=12-7x | | 3x+1=85 | | 8x/15=16 | | y-4/3=-2/7 | | 6x+24=14xs-56 | | 6y^2-7y+2= | | y^7/y^2 | | -5x+5=8-2x | | .00002x^2-.316x+1229=0 | | 20x-15=5+4x | | -23+7=6x+4-5x | | 9x-13=x+2 | | 11x+14y=3024 | | -5x^2=-5x+9 | | x^2+5w=0 | | 24-10x=3x+2 | | -4x-1=x-1 | | 4(5x+4)+7=17x-1 |

Equations solver categories